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Dr. George C. Chang Chien specializes in musculoskeletal medicine and comprehensive pain management. He was trained in Physical Medicine & Rehabilitation at the Rehabilitation Institute of Chicago, and completed fellowship training in comprehensive pain medicine at the Cleveland Clinic Anesthesiology Institute.

Dr. Chang Chien has authored over 90 manuscripts on the diagnosis and treatment of pain and orthopedic injuries. He has active research in regenerative medicine and is an expert in the use of ultrasound for diagnostic and interventional procedures.

He is currently the Director of Pain Management at Ventura County Medical Center, Director of Center Regenerative Medicine at Southern California University, and Director of where he teaches Regenerative Medicine, Diagnostic Ultrasound, and Ultrasound-Guided procedures. He is on the ASIPP Board of Directors, an ABIPP Examiner, and serves alongside Sudhir Diwan MD, as the Regenerative Medicine Section Co-Editor for Pain Physician Journal.